US4032222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled reflection readout for digital displays
Assignee: Digicourse Inc
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Filing: 1976-03-26
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Granted: 1977-06-28
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Expires: 1996-03-26
Abstract
Abstract The present disclosure is directed to a controlled reflection readout for light emitting information displays for such apparatus as computers, compasses, watches, clocks and consoles wherein the light emitting display is not placed normal to the viewing plane and cannot be read at 90° to the display. The light emitting display is inclined to the line of sight and glare shielding means extends forwardly from the top of the display to prohibit reading the display at a right angle thereto whereby reflections from the sun or lights in a room will interfere with reading through the optically transparent window in front of the light emitting display.
Inventors
- 👤 James M. Lapeyre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:04
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/04; G04; G04G; G04G9/00; G04G9/08; G04G9/10; G06; G06F; G06F15/00; G06F15/02; G06F15/0216; G09F; G09F9/00; G09F9/30; G09F9/33
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
118 words
A self illuminated readout having a glare and reflection control for ambient light comprising: (a) a casement having a viewing opening therein for viewing inside a casement front plane, (b) a light emitting display unit positioned inside said casement in view of said opening disposed in a second plane inclined at an angle of the order of 25° to 60° to said front plane, and (c) view limiting shield means carried by said casing and positioned in the light path between the light emitting display and an observer so that the viewing angle is restricted to less than 90° relative to the plane of said display unit thereby to eliminate reflections of external objects from the display unit.
Claim 2
Dependent Claim
118 words
A self illuminated readout having a glare and reflection control for ambient light comprising: (a) a casement having a viewing opening therein for viewing inside a casement front plane, (b) a light emitting display unit positioned inside said casement in view of said opening disposed in a second plane inclined at an angle of the order of 25° to 60° to said front plane, and (c) view limiting shield means carried by said casing and positioned in the light path between the light emitting display and an observer so that the viewing angle is restricted to less than 90° relative to the plane of said display unit thereby to eliminate reflections of external objects from the display unit.
Claim 3
Dependent Claim
42 words
A self illuminated readout having a glare and reflection control for ambient light as claimed in claim 1 further comprising a window supported by the casement in said viewing opening positioned substantially parallel to the emitting surface of said light emitting display.
Claim 4
Dependent Claim
26 words
A self illuminated readout having a glare and reflection control for ambient light as claimed in claim 2 wherein the casement is a digital readout calculator.
Claim 5
Dependent Claim
25 words
A self illuminated readout having a glare and reflection control for ambient light as claimed in claim 2 wherein the casement is a watch casement.
Claim 6
Dependent Claim
27 words
A self illuminated readout having a glare and reflection control for ambient light as claimed in claim 2 wherein the casement is an array of stacked instruments.
Claim 7
Dependent Claim
29 words
A self illuminated readout having a glare and reflection control for ambient light as claimed in claim 2 wherein the casement is a console viewed by a seated person.
Claim 8
Dependent Claim
24 words
The readout defined in claim 1 having a glare absorbing means on the surface of said shield means extending inside said casement front plane.
Claim 9
Dependent Claim
25 words
A self-illuminated readout having a glare and reflection control for ambient light as claimed in claim 1 wherein the casement is a digital readout calculator.
Claim 10
Dependent Claim
24 words
A self-illuminated readout having a glare and reflection control for ambient light as claimed in claim 1 wherein the casement is a watch casement.
Claim 11
Dependent Claim
25 words
A self-illuminated readout having a glare and reflection control for ambient light as claimed in claim 1 wherein the casement encloses a cathode ray tube.
Claim 12
Dependent Claim
28 words
A self-illuminated readout havng a glare and reflection control for ambient light as claimed in claim 1 wherein the casement is a console viewed by a seated person.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |